Exercise: Irrigation

Questions for: Irrigation

For a unique design of a channel by Kennedy's theory
A:
its breadth must only be known
B:
its depth must only be known
C:
its breadth and depth ratio must only be known
D:
all the above.
Answer: C
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A hydraulic jump is generally formed when a stream moving with
A:
a hyper-critical velocity meets a stream moving with a critical velocity
B:
a hyper-critical velocity meets a stream moving with a hyper-critical velocity
C:
A hyper-critical velocity meets a stream moving with a sub-critical velocity
D:
a sub-critical velocity meets a stream moving with a hyper-critical velocity.
Answer: C
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The Lacey's regime velocity is proportional to
A:
R1/2 S3/4
B:
Q3/4 S1/3
C:
R3/4 S1/3
D:
R2/3 S1/2
Answer: C
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Bligh's theory of seepage assumes
A:
equal weightage to the horizontal and vertical creep
B:
more weightage to horizontal creep than vertical creep
C:
less weightage to horizontal creep than vertical creep
D:
loss of head follows the sine curve.
Answer: A
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The optimum depth of kor watering for a rice crop, is
A:
23.0 cm
B:
19.0 cm
C:
17.5 cm
D:
13.5 cm
Answer: B
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